find the difference 7 7/8 - 3 1/4
That would be 4 and 5/8. Because you would find the common denominator which would be 8 and then take 24 and 21 and get 2/8 and then subtract 3 and 2/8 from 7 and 7/8 and get 4 and 5/8. I hope this helps you.